Why do low-quality microphones hear the S and SH sounds as it was someone blowing/wind?
In: Technology
Because those sounds, generally above others, are just “wind” noise. Try it; if you make a ‘sh’ noise and hold it for a while, it just sounds like you are blowing. It is only when combined with other sounds that it makes anything recognizable as speech.
Higher-quality microphones and software can compensate for this by reducing the harshness of the wind sound. The easiest way to do this is with a wind-sock: basically a foam sleeve that goes over the microphone. Other ways are by preset sample reduction (the developers set what they wanted to eliminate and the mic does that as it records). Distance from the microphone and pop-screens also help to break up the air and only get the sound.
We breath a lot of air out as we speak (more when we sing), so any means to disrupt the “wind” coming out of our mouths and only get the sound is going to help reduce it.
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